Scissors.



A. B. RAMSEY.

SGISSORS.- APPLIoATIoN FILED MAY s. 1910.

manned Aug. 16, 1910.

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] n um 1 loz @Mommy Wi buzones UNITED S)TETES PETEET OTETGEI Soissons. vf

To all whomi'it may concern: j

Be it known that I, ANNE B. RAMSEY, a citizen of the United States,residing at Davis, in the county of Murrayl and State of Oklahoma, haveinvented certain new and useful Improvements in Scissors, of which thefollowing is a specification.

This invention relates to scissors, shears and similar cutting devices,and its object is to provide an improved pivotal connection whereby theblades will be made to work free 4and easy, and also to provide apivotal connection'which will not work loose, and which is easilyadjusted. l

With these objects in view, the invention consists in a novelconstruction and arrangement of parts to be hereinafter described andclaimed, and in order that the-invention .may be better understood,reference is had to the accompanying drawing, in

which- Figure 1 is a plan view of a portion of, a pair of scissorsprovided with my im roved pivotal' connection. Fig. 2 is an en argedsection on 4the line 2--2 of Fig. 1. Fig. 3 is a section on the line 3-3of Fig. 2. Fig.

4i is a section on the line /1-4 of Fig. 2.

Referring s ecically to the drawing, the

two blades o the scissors are indicated at 5 and 6, respectively,'eachblade having a pivot opening through which the'pivot stud 7 passes. Onone end of thepivot Studis a knurled head 8, and its other end isscrewthreaded as indicated. at 9.4 The outer end of the pivot opening ofthe blade 5 is coun,-

. tersunlr to form a raceway for an annular series of anti-frictionballs 1G? The outer end of the pivot opening of the blade 6 has atapered countersink in which seats a nut 11,- into which the threadedend 9 of the ivot stud screws. The nut is tapered Vto t snugly in thecountersink, and has on one side a key 12 which seats in a keyway 13made in the wall of the countersink, whereby rotation of the nut isprevented.

The pivntstud 7, adjacent to the head 8, and one the outside of theblade 5, is formed with an annulir shoulder 14, which is in contactwiththe balls 10, and serves to retain the same in their raceway. The ballsextend sutliciently from the raceway so that .the shoulder may engagethem without coming into contact' with the blade. VThat portion of theshoulder which engages the balls 1s `rounded off to provide a properbearing surface.

Intermediate its ends, the .pivot stud 7 has 'an annular groove`15 inwhich seats a ringv this portion of the stud may be spread sidewise tobind the threads of the nut 11 with suiicient tightness to prevent thelatter from working loose.

In assembling the parts, the balls are placed in the raceway, and thepivot stud is passed through the v`'pivot opening in the blade 5. Thering 16 is then applied, which -prevents the balls from dropping fromthe raceway, said ring engaging the inner face of the blade. The 'nut 11is now placed in the countersink of the pivot opening of the blade 6,the key 12 being properly seated in the keyway1 13. The threaded portionof the pivot stud is then passed through the pivot l opening of theblade" 6, and screwed int-o the nut, after which the split portion ofthe stud is spread for the purpose `already described. The pivot studmay now be adjusted so that the blades work with the desired degree offreeness and ease, which completes the operation. The ring 16 is looseon the pivot stud so as not tol interfere with the-manipulation of thelatter to effect the adjustment. A slight turn of the pivot screw in onedirection draws the blades together to tighten the joint, and a turn inthe opposite direction backs them and loosens the joint. The ring 16 isflush with' the contiguous faces of the two blades, which permits themto be drawn closely together.

Bythe pivotal connection herein described the blades cannot work loose,orfbecome so tight as to necessitate the use of tools to eii'ectadjustment, and the'balls give the blades a free'and easy movement.Adjustment for thick heavy goods, and for the most delicate fabrics canbe readily made by giving the pivot stud a slight turn.

Scissors or the like comprising blades havhavin@ a countersink in itsout-er end, and the pivot opening of one blade having a `ing pivotopenings, each of said openings countersink in its inner end, a.pivotstud passing throughthe openings, a collar on thepvotlstudseating'inthe'lastfmntioned opposite the'shoulder, ysaid ballsbeing en- 10 countersink, and having its outer surface gageable by tlieshoulder.'

Hush with the contiguous surfacesof the In testimony whereof I affix mysignature blades, a shoulder on the pivot stud, a nut in presence of twoWitnesses.

into which the' pivot stud screws the shoulder being opposite one of theouter counter- ANNIE BELL RAMSEY' sinks, and the nut beingnon-rotatablyseat- Witnesses: A

ed'n the other'outer'eountersink, and anti- 0,2 C. FRANCIS,

friction balls in the countersink which is GHAS. WILLIS.

